Discussion :

[Pampax]

Bonjour à tous, je débute depuis peu sous Struts, je découvre avec bonheur les difficultés du framework.
Même si jusqu'à aujourd'hui, j'ai pu résoudre les problèmes rencontrés, je dois bien avouer être complétement bloqués.

Pour résumer la situation, il s'agit d'un problème d'action mapping, en effet, une fois que j'ai cliquer sur mon lien, tomcat m'affiche alors une erreur 500.

Je vous joint ci dessous le code dont je bénéficie.

L'action Mapping contenu dans struts-config.xml

Code :

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<action path = "/AjoutProjetFormulaire"
            type = "ActionAjoutProjet"
            name="AjoutProjetForm" 
            parameter ="method"
            scope     = "request"
            validate  = "true"
            input     = "/pages/ajoutProjet.jsp">
		<forward name="succes" path="page.ajoutProjet"  />
		<forward name="projetValide" path="page.projetValide"  />
        <forward name="erreur" path="/pages/erreur.jsp"  />
    </action>

Le lien contenu dans la JSP.

Code :

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	<a href='MonApplication/AjoutProjetFormulaire.do?method=action'> Ajouter un Projet </a>

Et enfin, un extrait de la classe ActionAjoutProjet

Code :

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import javax.naming.NamingException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
 
import com.gianfar.dao.AjoutProjetDAO;
import com.gianfar.metier.ProjetBean;
 
 
public class ActionAjoutProjet extends DispatchAction {
 
	public ActionForward action(ActionMapping Mapping,
			ActionForm Form, HttpServletRequest Requete,
			HttpServletResponse Reponse) {			
 
				return Mapping.findForward("succes");
	}

Si besoin, voilà l'affichage de la console

Code :

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25 janv. 2012 03:51:09 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files (x86)\Java\jre6\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files (x86)/Java/jre6/bin/client;C:/Program Files (x86)/Java/jre6/bin;C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMD APP\bin\x86;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files (x86)\Windows Live\Shared;.
25 janv. 2012 03:51:09 org.apache.tomcat.util.digester.SetPropertiesRule begin
ATTENTION: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:MonApplication' did not find a matching property.
25 janv. 2012 03:51:09 org.apache.coyote.http11.Http11Protocol init
INFO: Initialisation de Coyote HTTP/1.1 sur http-8080
25 janv. 2012 03:51:09 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 628 ms
25 janv. 2012 03:51:09 org.apache.catalina.core.StandardService start
INFO: Démarrage du service Catalina
25 janv. 2012 03:51:09 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.35
25 janv. 2012 03:51:10 org.apache.struts.action.ActionServlet initChain
INFO: Loading chain catalog from jar:file:/C:/Users/Vincent/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/MonApplication/WEB-INF/lib/struts-tiles-1.3.10.jar!/org/apache/struts/tiles/chain-config.xml
25 janv. 2012 03:51:10 org.apache.struts.tiles.TilesPlugin initDefinitionsFactory
INFO: Tiles definition factory loaded for module ''.
25 janv. 2012 03:51:10 org.apache.struts.validator.ValidatorPlugIn initResources
INFO: Loading validation rules file from '/org/apache/struts/validator/validator-rules.xml'
25 janv. 2012 03:51:10 org.apache.struts.validator.ValidatorPlugIn initResources
INFO: Loading validation rules file from '/WEB-INF/validator-defs.xml'
25 janv. 2012 03:51:10 org.apache.coyote.http11.Http11Protocol start
INFO: Démarrage de Coyote HTTP/1.1 sur http-8080
25 janv. 2012 03:51:10 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
25 janv. 2012 03:51:10 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/28  config=null
25 janv. 2012 03:51:10 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1134 ms
25 janv. 2012 03:52:47 org.apache.struts.chain.ComposableRequestProcessor init
INFO: Initializing composable request processor for module prefix ''
25 janv. 2012 03:52:47 org.apache.struts.chain.commands.servlet.CreateAction createAction
INFO: Initialize action of type: ActionLancement
25 janv. 2012 03:52:48 org.apache.struts.tiles.commands.TilesPreProcessor execute
INFO: Tiles process complete; forward to /pages/generale.jsp
25 janv. 2012 03:59:25 org.apache.struts.tiles.commands.TilesPreProcessor execute
INFO: Tiles process complete; forward to /pages/generale.jsp
25 janv. 2012 03:59:45 org.apache.struts.chain.commands.AbstractExceptionHandler execute
ATTENTION: Unhandled exception
java.lang.NullPointerException
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
	at org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
	at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
25 janv. 2012 03:59:45 org.apache.struts.chain.commands.ExceptionCatcher postprocess
ATTENTION: Exception from exceptionCommand 'servlet-exception'
java.lang.NullPointerException
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
	at org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
	at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
25 janv. 2012 03:59:45 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: "Servlet.service()" pour la servlet action a généré une exception
java.lang.NullPointerException
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
	at org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
	at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)

Étant encore débutant je suis navré si j'utilise un vocabulaire inadapté.
Merci par avance